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249829 (2001 LH18)
Classification: Main-belt Asteroid          SPK-ID: 2249829
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1645264887839634 3.7275e-08  
a 2.59345364987297 1.8332e-08 au
q 2.166761827035415 9.706e-08 au
i 18.49932356783352 4.5208e-06 deg
node 121.8009171471924 1.3759e-05 deg
peri 122.1570613299197 2.192e-05 deg
M 197.8959299732092 2.0077e-05 deg
tp 2459687.422245903994
(2022-Apr-17.92224590)
8.9632e-05 TDB
period 1525.513878118966
4.18
1.6174e-05
4.428e-08
d
yr
n .23598605372499 2.5021e-09 deg/d
Q 3.020145472710524 2.1348e-08 au
  Orbit Determination Parameters
   # obs. used (total)      397  
   data-arc span      6850 days (18.75 yr)  
   first obs. used      2001-04-27  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52919  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:27:31  

Additional Information
 Earth MOID = 1.2052 au 
 Jupiter MOID = 2.24995 au 
 T_jup = 3.327 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457478.5 (2016-Mar-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1650485025405471 3.7198e-08  
q 2.164471308339737 9.6838e-08 au
tp 2458162.626791989258
(2018-Feb-13.12679199)
7.9896e-05 TDB
node 121.8462307105013 1.3762e-05 deg
peri 122.2509706612665 2.1904e-05 deg
i 18.50005887698256 4.5211e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      397  
   data-arc span      6850 days (18.75 yr)  
   first obs. used      2001-04-27  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52919  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:27:31  

Additional Information
 Jupiter MOID = 2.24995 au 
 T_jup = 3.327 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.383675299613548E-15 -3.557193885961833E-15 4.073000749588545E-13 -5.084181957978606E-15 6.954625427009672E-14 4.889224695748247E-15
q -3.557193885961833E-15 9.377597237669762E-15 -4.196881497614545E-13 8.680824938750816E-15 -6.712071125497094E-14 -1.185183156892969E-14
tp 4.073000749588545E-13 -4.196881497614545E-13 6.383388625115333E-9 -5.108090344219604E-11 1.377390011408612E-9 -1.845794711739464E-12
node -5.084181957978606E-15 8.680824938750816E-15 -5.108090344219604E-11 1.894056883224349E-10 -1.896789488329096E-10 2.733430805062403E-12
peri 6.954625427009672E-14 -6.712071125497094E-14 1.377390011408612E-9 -1.896789488329096E-10 4.797871457409004E-10 -3.124078700881377E-12
i 4.889224695748247E-15 -1.185183156892969E-14 -1.845794711739464E-12 2.733430805062403E-12 -3.124078700881377E-12 2.044009587182973E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8   n/a MPO418334  
diameter diameter 2.997 km 0.697 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.136   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249829 (2001 LH18)          Discovered 2001-Jun-13 by LONEOS at Anderson Mesa
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

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